Low moments of the four-loop splitting functions in QCD

Autor: S. Moch, B. Ruijl, T. Ueda, J.A.M. Vermaseren, A. Vogt

Publikováno v: Physics letters / B 825, 136853 (2022). doi:10.1016/j.physletb.2021.136853
Physics Letters
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 825
Physics Letters B, Vol 825, Iss, Pp 136853-(2022)

Physics letters / B 825, 136853 (2022). doi:10.1016/j.physletb.2021.136853
We have computed the four lowest even-N moments of all four splitting functions for the evolution of flavour-singlet parton densities of hadrons at the fourth order in th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a621ea88d5bffa409026ca05368e7d9d
https://bib-pubdb1.desy.de/record/481428

Approximate four-loop QCD corrections to the Higgs-boson production cross section

Autor: Sven Moch, Andreas Vogt, Goutam Das

Publikováno v: Physics Letters
Physics letters / B 807, 135546 (2020). doi:10.1016/j.physletb.2020.135546
Physics Letters B, Vol 807, Iss, Pp 135546-(2020)

Physics letters / B 807, 135546 (2020). doi:10.1016/j.physletb.2020.135546
We study the soft and collinear contributions to inclusive Higgs-boson production in gluon-gluon fusion at four loops. Using recent progress for the quark and gluon form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1560b90512d95ec3bd484bc09a6bf0b

Secondary production of massive quarks in thrust

Autor: André H. Hoang, Piotr Pietrulewicz, Vicent Mateu

Publikováno v: AIP Conference Proceedings.

We present a factorization framework that takes into account the production of heavy quarks through gluon splitting in the thrust distribution for e+ e- --> hadrons. The explicit factorization theorems and some numerical results are displayed in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d5a415e20781debbb6aed1b7f84f6c3
https://doi.org/10.1063/1.4938649

New insights into the spin structure of the nucleon

Autor: Ulf-G. Meißner, Evgeny Epelbaum, Véronique Bernard, Hermann Krebs

Publikováno v: Physical Review D
Physical Review D, American Physical Society, 2013, 87, pp.054032. ⟨10.1103/PhysRevD.87.054032⟩
Physical review / D 87(5), 054032 (2013). doi:10.1103/PhysRevD.87.054032

We analyze the low-energy spin structure of the nucleon in a covariant effective field theory with explicit spin-3/2 degrees of freedom to third order in the small scale expansion. Using the available data on the strong and electromagnetic width of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40b717d08d9ffb8c3fc2f26752614fba
http://arxiv.org/abs/1209.2523

Five-loop contributions to low-N non-singlet anomalous dimensions in QCD

Autor: J.A.M. Vermaseren, Takahiro Ueda, Ben Ruijl, Andreas Vogt, Franz Herzog, Sven-Olaf Moch

Publikováno v: Physics Letters B
Physics letters / B 790, 436-443 (2019). doi:10.1016/j.physletb.2019.01.060
Physics Letters B, 790
Physics Letters
Physics Letters B, Vol 790, Iss, Pp 436-443 (2019)
PHYSICS LETTERS B

We present the first calculations of next-to-next-to-next-to-next-to-leading order (N4LO) contributions to anomalous dimensions of spin-N twist-2 operators in perturbative QCD. Specifically, we have obtained the respective non-singlet quark–quark a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d419fb505a146c4f3159bb8b10f9988a